The existence of a patent is not evidence

Just because there are patents granted for things like geoengineering and cloud seeding, that is not evidence that anyone is actually doing it! It just means that someone was granted a patent for it. Nothing more and nothing less.

There are millions of patents for things (eg anti-gravity devices) that no one is actually doing, so the existence of a patent is not evidence for the thing that has been patented (unless you really are bat shit crazy and believe in things like anti-gravity devices).